'ear-stone' can also refer to...


More Like This

Show all results sharing this subject:

  • Zoology and Animal Sciences


Show Summary Details

Quick Reference

A generally oval-shaped, solid, calcareous structure that is enclosed in membranaceous sacs in the inner-ear region of the brain of vertebrates. Although there are usually three ear-stones on each side of the brain, the middle one, the sagitta, is often the largest. Because the ear-stone shows growth zones, or annual rings, it is used by fish biologists to determine the age of fish.

Subjects: Zoology and Animal Sciences.

Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.